{"id":75864,"date":"2024-10-16T01:52:16","date_gmt":"2024-10-15T17:52:16","guid":{"rendered":"https:\/\/server.hk\/cnblog\/75864\/"},"modified":"2024-10-16T01:52:16","modified_gmt":"2024-10-15T17:52:16","slug":"mysql-%e5%ad%98%e5%84%b2on%e6%96%b9%e6%b3%95%e8%a9%b3%e8%a7%a3-mysql%e5%a6%82%e4%bd%95%e5%ad%98%e5%84%b2json%e6%95%b8%e6%93%9a%e5%ba%ab%e4%b8%ad","status":"publish","type":"post","link":"https:\/\/server.hk\/cnblog\/75864\/","title":{"rendered":"MySQL \u5b58\u5132ON\u65b9\u6cd5\u8a73\u89e3 (MySQL\u5982\u4f55\u5b58\u5132JSON\u6578\u64da\u5eab\u4e2d)"},"content":{"rendered":"<h1 id=\"mysql-%e5%ad%98%e5%84%b2on%e6%96%b9%e6%b3%95%e8%a9%b3%e8%a7%a3-mysql%e5%a6%82%e4%bd%95%e5%ad%98%e5%84%b2json%e6%95%b8%e6%93%9a%e5%ba%ab%e4%b8%ad-OHFkrnQcns\">MySQL \u5b58\u5132ON\u65b9\u6cd5\u8a73\u89e3 (MySQL\u5982\u4f55\u5b58\u5132JSON\u6578\u64da\u5eab\u4e2d)<\/h1>\n<p>\u96a8\u8457\u6578\u64da\u7684\u591a\u6a23\u5316\uff0c\u8d8a\u4f86\u8d8a\u591a\u7684\u61c9\u7528\u7a0b\u5e8f\u9700\u8981\u8655\u7406\u975e\u7d50\u69cb\u5316\u6578\u64da\u3002MySQL\u4f5c\u70ba\u4e00\u500b\u6d41\u884c\u7684\u95dc\u4fc2\u578b\u6578\u64da\u5eab\u7ba1\u7406\u7cfb\u7d71\uff0c\u5f9e5.7\u7248\u672c\u958b\u59cb\u5f15\u5165\u4e86\u5c0dJSON\u6578\u64da\u985e\u578b\u7684\u652f\u6301\uff0c\u4f7f\u5f97\u958b\u767c\u8005\u80fd\u5920\u66f4\u9748\u6d3b\u5730\u5b58\u5132\u548c\u67e5\u8a62JSON\u6578\u64da\u3002\u672c\u6587\u5c07\u8a73\u7d30\u4ecb\u7d39MySQL\u5982\u4f55\u5b58\u5132JSON\u6578\u64da\uff0c\u4e26\u63d0\u4f9b\u4e00\u4e9b\u5be6\u7528\u7684\u793a\u4f8b\u548c\u4ee3\u78bc\u7247\u6bb5\u3002<\/p>\n<h2 id=\"1-json%e6%95%b8%e6%93%9a%e9%a1%9e%e5%9e%8b%e7%9a%84%e4%bb%8b%e7%b4%b9-OHFkrnQcns\">1. JSON\u6578\u64da\u985e\u578b\u7684\u4ecb\u7d39<\/h2>\n<p>\u5728MySQL\u4e2d\uff0cJSON\u6578\u64da\u985e\u578b\u662f\u4e00\u7a2e\u7279\u6b8a\u7684\u6578\u64da\u985e\u578b\uff0c\u65e8\u5728\u9ad8\u6548\u5730\u5b58\u5132\u548c\u64cd\u4f5cJSON\u683c\u5f0f\u7684\u6578\u64da\u3002\u4f7f\u7528JSON\u6578\u64da\u985e\u578b\u7684\u4e3b\u8981\u512a\u52e2\u5305\u62ec\uff1a<\/p>\n<ul>\n<li>\u9748\u6d3b\u6027\uff1a\u53ef\u4ee5\u5b58\u5132\u7d50\u69cb\u4e0d\u56fa\u5b9a\u7684\u6578\u64da\u3002<\/li>\n<li>\u9ad8\u6548\u6027\uff1aMySQL\u5c0dJSON\u6578\u64da\u9032\u884c\u4e86\u512a\u5316\uff0c\u80fd\u5920\u5feb\u901f\u67e5\u8a62\u548c\u64cd\u4f5c\u3002<\/li>\n<li>\u5167\u5efa\u51fd\u6578\uff1aMySQL\u63d0\u4f9b\u4e86\u591a\u7a2e\u5167\u5efa\u51fd\u6578\u4f86\u8655\u7406JSON\u6578\u64da\u3002<\/li>\n<\/ul>\n<h2 id=\"2-%e5%89%b5%e5%bb%ba%e5%8c%85%e5%90%abjson%e5%ad%97%e6%ae%b5%e7%9a%84%e8%a1%a8-OHFkrnQcns\">2. \u5275\u5efa\u5305\u542bJSON\u5b57\u6bb5\u7684\u8868<\/h2>\n<p>\u8981\u5728MySQL\u4e2d\u5b58\u5132JSON\u6578\u64da\uff0c\u9996\u5148\u9700\u8981\u5275\u5efa\u4e00\u500b\u5305\u542bJSON\u5b57\u6bb5\u7684\u8868\u3002\u4ee5\u4e0b\u662f\u4e00\u500b\u793a\u4f8b\uff1a<\/p>\n<pre><code>CREATE TABLE users (\n    id INT AUTO_INCREMENT PRIMARY KEY,\n    name VARCHAR(100),\n    data JSON\n);<\/code><\/pre>\n<p>\u5728\u9019\u500b\u793a\u4f8b\u4e2d\uff0c\u6211\u5011\u5275\u5efa\u4e86\u4e00\u500b\u540d\u70ba`users`\u7684\u8868\uff0c\u5176\u4e2d\u5305\u542b\u4e00\u500b`data`\u5b57\u6bb5\uff0c\u8a72\u5b57\u6bb5\u7684\u6578\u64da\u985e\u578b\u70baJSON\u3002<\/p>\n<h2 id=\"3-%e6%8f%92%e5%85%a5json%e6%95%b8%e6%93%9a-OHFkrnQcns\">3. \u63d2\u5165JSON\u6578\u64da<\/h2>\n<p>\u63d2\u5165JSON\u6578\u64da\u975e\u5e38\u7c21\u55ae\uff0c\u53ef\u4ee5\u4f7f\u7528\u6a19\u6e96\u7684INSERT\u8a9e\u53e5\u3002\u4ee5\u4e0b\u662f\u63d2\u5165\u6578\u64da\u7684\u793a\u4f8b\uff1a<\/p>\n<pre><code>INSERT INTO users (name, data) VALUES ('Alice', '{\"age\": 30, \"city\": \"Hong Kong\"}');<\/code><\/pre>\n<p>\u5728\u9019\u500b\u793a\u4f8b\u4e2d\uff0c\u6211\u5011\u63d2\u5165\u4e86\u4e00\u500b\u7528\u6236\u7684\u59d3\u540d\u548c\u4e00\u500b\u5305\u542b\u5e74\u9f61\u548c\u57ce\u5e02\u7684JSON\u5c0d\u8c61\u3002<\/p>\n<h2 id=\"4-%e6%9f%a5%e8%a9%a2json%e6%95%b8%e6%93%9a-OHFkrnQcns\">4. \u67e5\u8a62JSON\u6578\u64da<\/h2>\n<p>MySQL\u63d0\u4f9b\u4e86\u591a\u7a2e\u51fd\u6578\u4f86\u67e5\u8a62JSON\u6578\u64da\u3002\u4ee5\u4e0b\u662f\u4e00\u4e9b\u5e38\u7528\u7684\u67e5\u8a62\u793a\u4f8b\uff1a<\/p>\n<pre><code>SELECT name, JSON_EXTRACT(data, '$.age') AS age FROM users WHERE JSON_UNQUOTE(JSON_EXTRACT(data, '$.city')) = 'Hong Kong';<\/code><\/pre>\n<p>\u5728\u9019\u500b\u67e5\u8a62\u4e2d\uff0c\u6211\u5011\u63d0\u53d6\u4e86\u7528\u6236\u7684\u59d3\u540d\u548c\u5e74\u9f61\uff0c\u4e26\u6839\u64da\u57ce\u5e02\u9032\u884c\u904e\u6ffe\u3002<\/p>\n<h2 id=\"5-%e6%9b%b4%e6%96%b0json%e6%95%b8%e6%93%9a-OHFkrnQcns\">5. \u66f4\u65b0JSON\u6578\u64da<\/h2>\n<p>\u66f4\u65b0JSON\u6578\u64da\u540c\u6a23\u53ef\u4ee5\u4f7f\u7528\u6a19\u6e96\u7684UPDATE\u8a9e\u53e5\u3002\u4ee5\u4e0b\u662f\u66f4\u65b0\u6578\u64da\u7684\u793a\u4f8b\uff1a<\/p>\n<pre><code>UPDATE users SET data = JSON_SET(data, '$.age', 31) WHERE name = 'Alice';<\/code><\/pre>\n<p>\u9019\u500b\u793a\u4f8b\u5c07\u7528\u6236Alice\u7684\u5e74\u9f61\u66f4\u65b0\u70ba31\u3002<\/p>\n<h2 id=\"6-%e5%88%aa%e9%99%a4json%e6%95%b8%e6%93%9a%e4%b8%ad%e7%9a%84%e6%9f%90%e5%80%8b%e9%8d%b5-OHFkrnQcns\">6. \u522a\u9664JSON\u6578\u64da\u4e2d\u7684\u67d0\u500b\u9375<\/h2>\n<p>\u5982\u679c\u9700\u8981\u522a\u9664JSON\u5c0d\u8c61\u4e2d\u7684\u67d0\u500b\u9375\uff0c\u53ef\u4ee5\u4f7f\u7528JSON_REMOVE\u51fd\u6578\u3002\u4ee5\u4e0b\u662f\u793a\u4f8b\uff1a<\/p>\n<pre><code>UPDATE users SET data = JSON_REMOVE(data, '$.city') WHERE name = 'Alice';<\/code><\/pre>\n<p>\u9019\u5c07\u522a\u9664\u7528\u6236Alice\u7684\u57ce\u5e02\u4fe1\u606f\u3002<\/p>\n<h2 id=\"7-%e5%b0%8f%e7%b5%90-OHFkrnQcns\">7. \u5c0f\u7d50<\/h2>\n<p>MySQL\u7684JSON\u6578\u64da\u985e\u578b\u70ba\u958b\u767c\u8005\u63d0\u4f9b\u4e86\u9748\u6d3b\u4e14\u9ad8\u6548\u7684\u65b9\u5f0f\u4f86\u5b58\u5132\u548c\u64cd\u4f5c\u975e\u7d50\u69cb\u5316\u6578\u64da\u3002\u901a\u904e\u4f7f\u7528JSON\u5b57\u6bb5\uff0c\u958b\u767c\u8005\u53ef\u4ee5\u8f15\u9b06\u5730\u63d2\u5165\u3001\u67e5\u8a62\u3001\u66f4\u65b0\u548c\u522a\u9664JSON\u6578\u64da\uff0c\u5f9e\u800c\u6eff\u8db3\u73fe\u4ee3\u61c9\u7528\u7a0b\u5e8f\u7684\u9700\u6c42\u3002<\/p>\n<p>\u5982\u679c\u60a8\u6b63\u5728\u5c0b\u627e\u7a69\u5b9a\u4e14\u9ad8\u6548\u7684\u6578\u64da\u5eab\u89e3\u6c7a\u65b9\u6848\uff0c\u8003\u616e\u4f7f\u7528<a href=\"https:\/\/server.hk\">\u9999\u6e2fVPS<\/a>\u4f86\u90e8\u7f72\u60a8\u7684MySQL\u6578\u64da\u5eab\u3002\u7121\u8ad6\u662f\u5c0f\u578b\u9805\u76ee\u9084\u662f\u5927\u578b\u61c9\u7528\uff0c\u9078\u64c7\u5408\u9069\u7684<a href=\"https:\/\/server.hk\">\u4e91\u4f3a\u670d\u5668<\/a>\u90fd\u80fd\u70ba\u60a8\u7684\u696d\u52d9\u63d0\u4f9b\u5f37\u6709\u529b\u7684\u652f\u6301\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u6df1\u5165\u63a2\u8a0eMySQL\u5b58\u5132ON\u65b9\u6cd5\uff0c\u8a73\u89e3\u5982\u4f55\u5728MySQL\u6578\u64da\u5eab\u4e2d\u6709\u6548\u5b58\u5132\u548c\u7ba1\u7406JSON\u6578\u64da\u3002<\/p>\n","protected":false},"author":0,"featured_media":0,"comment_status":"closed","ping_status":"","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[101],"tags":[],"class_list":["post-75864","post","type-post","status-publish","format-standard","hentry","category-database"],"_links":{"self":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/75864","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/types\/post"}],"replies":[{"embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/comments?post=75864"}],"version-history":[{"count":1,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/75864\/revisions"}],"predecessor-version":[{"id":75865,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/75864\/revisions\/75865"}],"wp:attachment":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/media?parent=75864"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/categories?post=75864"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/tags?post=75864"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}